Finding the Third Proportional to 61,644.38 and 90,522.56

Step by Step Solution

1. Step 1: Write the proportion equation
   61,644.38 : 90,522.56 = 90,522.56 : x
2. Step 2: Convert to fraction form
   61,644.38/90,522.56 = 90,522.56/x
3. Step 3: Cross multiply
   61,644.38x = 90,522.56 × 90,522.56
4. Step 4: Simplify right side
   61,644.38x = 8,194,334,321.57
5. Step 5: Solve for x
   x = 8,194,334,321.57/61,644.38
6. Step 6: Final answer
   x = 132,929.15