Finding the Third Proportional to 42,900 and 62,136

Step by Step Solution

1. Step 1: Write the proportion equation
   42,900 : 62,136 = 62,136 : x
2. Step 2: Convert to fraction form
   42,900/62,136 = 62,136/x
3. Step 3: Cross multiply
   42,900x = 62,136 × 62,136
4. Step 4: Simplify right side
   42,900x = 3,860,882,496
5. Step 5: Solve for x
   x = 3,860,882,496/42,900
6. Step 6: Final answer
   x = 89,997.26