Finding the Third Proportional to 62,980 and 85,158

Step by Step Solution

1. Step 1: Write the proportion equation
   62,980 : 85,158 = 85,158 : x
2. Step 2: Convert to fraction form
   62,980/85,158 = 85,158/x
3. Step 3: Cross multiply
   62,980x = 85,158 × 85,158
4. Step 4: Simplify right side
   62,980x = 7,251,884,964
5. Step 5: Solve for x
   x = 7,251,884,964/62,980
6. Step 6: Final answer
   x = 115,145.84