Finding the Third Proportional to 62,694 and 87,870

Step by Step Solution

1. Step 1: Write the proportion equation
   62,694 : 87,870 = 87,870 : x
2. Step 2: Convert to fraction form
   62,694/87,870 = 87,870/x
3. Step 3: Cross multiply
   62,694x = 87,870 × 87,870
4. Step 4: Simplify right side
   62,694x = 7,721,136,900
5. Step 5: Solve for x
   x = 7,721,136,900/62,694
6. Step 6: Final answer
   x = 123,155.91