Finding the Third Proportional to 187,516 and 281,294.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,516 : 281,294.50 = 281,294.50 : x
2. Step 2: Convert to fraction form
   187,516/281,294.50 = 281,294.50/x
3. Step 3: Cross multiply
   187,516x = 281,294.50 × 281,294.50
4. Step 4: Simplify right side
   187,516x = 79,126,595,730.25
5. Step 5: Solve for x
   x = 79,126,595,730.25/187,516
6. Step 6: Final answer
   x = 421,972.50