Finding the Third Proportional to 61,212.38 and 89,722.13

Step by Step Solution

1. Step 1: Write the proportion equation
   61,212.38 : 89,722.13 = 89,722.13 : x
2. Step 2: Convert to fraction form
   61,212.38/89,722.13 = 89,722.13/x
3. Step 3: Cross multiply
   61,212.38x = 89,722.13 × 89,722.13
4. Step 4: Simplify right side
   61,212.38x = 8,050,059,714.52
5. Step 5: Solve for x
   x = 8,050,059,714.52/61,212.38
6. Step 6: Final answer
   x = 131,510.33