Finding the Third Proportional to 659,673 and 987,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   659,673 : 987,781.50 = 987,781.50 : x
2. Step 2: Convert to fraction form
   659,673/987,781.50 = 987,781.50/x
3. Step 3: Cross multiply
   659,673x = 987,781.50 × 987,781.50
4. Step 4: Simplify right side
   659,673x = 975,712,291,742.25
5. Step 5: Solve for x
   x = 975,712,291,742.25/659,673
6. Step 6: Final answer
   x = 1,479,084.78