Finding the Third Proportional to 87,470 and 131,821.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,470 : 131,821.50 = 131,821.50 : x
2. Step 2: Convert to fraction form
   87,470/131,821.50 = 131,821.50/x
3. Step 3: Cross multiply
   87,470x = 131,821.50 × 131,821.50
4. Step 4: Simplify right side
   87,470x = 17,376,907,862.25
5. Step 5: Solve for x
   x = 17,376,907,862.25/87,470
6. Step 6: Final answer
   x = 198,661.35