Finding the Third Proportional to 61,405.50 and 91,729.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,405.50 : 91,729.25 = 91,729.25 : x
2. Step 2: Convert to fraction form
   61,405.50/91,729.25 = 91,729.25/x
3. Step 3: Cross multiply
   61,405.50x = 91,729.25 × 91,729.25
4. Step 4: Simplify right side
   61,405.50x = 8,414,255,305.56
5. Step 5: Solve for x
   x = 8,414,255,305.56/61,405.50
6. Step 6: Final answer
   x = 137,027.71