Finding the Third Proportional to 58,518 and 85,410

Step by Step Solution

1. Step 1: Write the proportion equation
   58,518 : 85,410 = 85,410 : x
2. Step 2: Convert to fraction form
   58,518/85,410 = 85,410/x
3. Step 3: Cross multiply
   58,518x = 85,410 × 85,410
4. Step 4: Simplify right side
   58,518x = 7,294,868,100
5. Step 5: Solve for x
   x = 7,294,868,100/58,518
6. Step 6: Final answer
   x = 124,660.24