Finding the Third Proportional to 87,316 and 131,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,316 : 131,656.50 = 131,656.50 : x
2. Step 2: Convert to fraction form
   87,316/131,656.50 = 131,656.50/x
3. Step 3: Cross multiply
   87,316x = 131,656.50 × 131,656.50
4. Step 4: Simplify right side
   87,316x = 17,333,433,992.25
5. Step 5: Solve for x
   x = 17,333,433,992.25/87,316
6. Step 6: Final answer
   x = 198,513.83