Finding the Third Proportional to 51,080.25 and 76,690.13

Step by Step Solution

1. Step 1: Write the proportion equation
   51,080.25 : 76,690.13 = 76,690.13 : x
2. Step 2: Convert to fraction form
   51,080.25/76,690.13 = 76,690.13/x
3. Step 3: Cross multiply
   51,080.25x = 76,690.13 × 76,690.13
4. Step 4: Simplify right side
   51,080.25x = 5,881,375,272.52
5. Step 5: Solve for x
   x = 5,881,375,272.52/51,080.25
6. Step 6: Final answer
   x = 115,139.91