Finding the Third Proportional to 61,269.75 and 86,734.13

Step by Step Solution

1. Step 1: Write the proportion equation
   61,269.75 : 86,734.13 = 86,734.13 : x
2. Step 2: Convert to fraction form
   61,269.75/86,734.13 = 86,734.13/x
3. Step 3: Cross multiply
   61,269.75x = 86,734.13 × 86,734.13
4. Step 4: Simplify right side
   61,269.75x = 7,522,808,439.52
5. Step 5: Solve for x
   x = 7,522,808,439.52/61,269.75
6. Step 6: Final answer
   x = 122,781.77