Finding the Third Proportional to 58,516 and 85,118

Step by Step Solution

1. Step 1: Write the proportion equation
   58,516 : 85,118 = 85,118 : x
2. Step 2: Convert to fraction form
   58,516/85,118 = 85,118/x
3. Step 3: Cross multiply
   58,516x = 85,118 × 85,118
4. Step 4: Simplify right side
   58,516x = 7,245,073,924
5. Step 5: Solve for x
   x = 7,245,073,924/58,516
6. Step 6: Final answer
   x = 123,813.55