Finding the Third Proportional to 56,292 and 89,136

Step by Step Solution

1. Step 1: Write the proportion equation
   56,292 : 89,136 = 89,136 : x
2. Step 2: Convert to fraction form
   56,292/89,136 = 89,136/x
3. Step 3: Cross multiply
   56,292x = 89,136 × 89,136
4. Step 4: Simplify right side
   56,292x = 7,945,226,496
5. Step 5: Solve for x
   x = 7,945,226,496/56,292
6. Step 6: Final answer
   x = 141,143.08