Finding the Third Proportional to 578,380.50 and 1,209,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   578,380.50 : 1,209,127.50 = 1,209,127.50 : x
2. Step 2: Convert to fraction form
   578,380.50/1,209,127.50 = 1,209,127.50/x
3. Step 3: Cross multiply
   578,380.50x = 1,209,127.50 × 1,209,127.50
4. Step 4: Simplify right side
   578,380.50x = 1,461,989,311,256.25
5. Step 5: Solve for x
   x = 1,461,989,311,256.25/578,380.50
6. Step 6: Final answer
   x = 2,527,729.26