Finding the Third Proportional to 187,642.50 and 403,782

Step by Step Solution

1. Step 1: Write the proportion equation
   187,642.50 : 403,782 = 403,782 : x
2. Step 2: Convert to fraction form
   187,642.50/403,782 = 403,782/x
3. Step 3: Cross multiply
   187,642.50x = 403,782 × 403,782
4. Step 4: Simplify right side
   187,642.50x = 163,039,903,524
5. Step 5: Solve for x
   x = 163,039,903,524/187,642.50
6. Step 6: Final answer
   x = 868,885.80