Finding the Third Proportional to 578,724 and 1,269,507

Step by Step Solution

1. Step 1: Write the proportion equation
   578,724 : 1,269,507 = 1,269,507 : x
2. Step 2: Convert to fraction form
   578,724/1,269,507 = 1,269,507/x
3. Step 3: Cross multiply
   578,724x = 1,269,507 × 1,269,507
4. Step 4: Simplify right side
   578,724x = 1,611,648,023,049
5. Step 5: Solve for x
   x = 1,611,648,023,049/578,724
6. Step 6: Final answer
   x = 2,784,830.11