Finding the Third Proportional to 515,045 and 784,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   515,045 : 784,561.50 = 784,561.50 : x
2. Step 2: Convert to fraction form
   515,045/784,561.50 = 784,561.50/x
3. Step 3: Cross multiply
   515,045x = 784,561.50 × 784,561.50
4. Step 4: Simplify right side
   515,045x = 615,536,747,282.25
5. Step 5: Solve for x
   x = 615,536,747,282.25/515,045
6. Step 6: Final answer
   x = 1,195,112.56