Finding the Third Proportional to 58,411.13 and 91,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   58,411.13 : 91,147.78 = 91,147.78 : x
2. Step 2: Convert to fraction form
   58,411.13/91,147.78 = 91,147.78/x
3. Step 3: Cross multiply
   58,411.13x = 91,147.78 × 91,147.78
4. Step 4: Simplify right side
   58,411.13x = 8,307,918,026.80
5. Step 5: Solve for x
   x = 8,307,918,026.80/58,411.13
6. Step 6: Final answer
   x = 142,231.78