Finding the Third Proportional to 520,552 and 787,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   520,552 : 787,393.50 = 787,393.50 : x
2. Step 2: Convert to fraction form
   520,552/787,393.50 = 787,393.50/x
3. Step 3: Cross multiply
   520,552x = 787,393.50 × 787,393.50
4. Step 4: Simplify right side
   520,552x = 619,988,523,842.25
5. Step 5: Solve for x
   x = 619,988,523,842.25/520,552
6. Step 6: Final answer
   x = 1,191,021.31