Finding the Third Proportional to 187,722 and 402,153.75

Step by Step Solution

1. Step 1: Write the proportion equation
   187,722 : 402,153.75 = 402,153.75 : x
2. Step 2: Convert to fraction form
   187,722/402,153.75 = 402,153.75/x
3. Step 3: Cross multiply
   187,722x = 402,153.75 × 402,153.75
4. Step 4: Simplify right side
   187,722x = 161,727,638,639.06
5. Step 5: Solve for x
   x = 161,727,638,639.06/187,722
6. Step 6: Final answer
   x = 861,527.36