Master to Slave to Slave Configuration in MySQL
Based on our chat conversation, here is what was discussed

Server1 is Stand Alone
Server2 is a Master
Server3 is a Slave to Server2

This implies that binary logging is enabled in Server2.
To Make Server1 a Master of Server2, perform the following:
STEP 01 : On Server2, add this to /etc/my.cnf
[mysqld]
log-slave-updates

STEP 02 : On Server3, run STOP SLAVE;
STEP 03 : On Server2, run service mysql restart
STEP 04 : On Server3, run START SLAVE;
STEP 06 : On Server1, add this to /etc/my.cnf
[mysqld]
log-bin=mysql-bin

STEP 07 : On Server1, run service mysql restart
STEP 08 : Set Replication From Server1 to Server2
See Clarification about master slave configuration in mysql
OPTIONAL
Once you have MySQL Replication Going From Server1 to Server2 to Server3, your can properly load all data into all three MySQL Instances by doing the following on Server1:
mysqldump -u... -p... --all-databases --routines --triggers &gt; mysqldata.sql
mysql -u... -p... &lt; mysqldata.sql

This will do three(3) things

Repopulate everything into Server1
MySQL Replication will handle populating Server2 from Server1
MySQL Replication will handle populating Server3 from Server2

Since your data is 50MB in total, this should be execute very quickly.