Finding the Third Proportional to 58,080.50 and 85,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,080.50 : 85,419.50 = 85,419.50 : x
2. Step 2: Convert to fraction form
   58,080.50/85,419.50 = 85,419.50/x
3. Step 3: Cross multiply
   58,080.50x = 85,419.50 × 85,419.50
4. Step 4: Simplify right side
   58,080.50x = 7,296,490,980.25
5. Step 5: Solve for x
   x = 7,296,490,980.25/58,080.50
6. Step 6: Final answer
   x = 125,627.21