Finding the Third Proportional to 623,944 and 987,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   623,944 : 987,134.50 = 987,134.50 : x
2. Step 2: Convert to fraction form
   623,944/987,134.50 = 987,134.50/x
3. Step 3: Cross multiply
   623,944x = 987,134.50 × 987,134.50
4. Step 4: Simplify right side
   623,944x = 974,434,521,090.25
5. Step 5: Solve for x
   x = 974,434,521,090.25/623,944
6. Step 6: Final answer
   x = 1,561,733.94