Finding the Third Proportional to 89,448 and 139,060

Step by Step Solution

1. Step 1: Write the proportion equation
   89,448 : 139,060 = 139,060 : x
2. Step 2: Convert to fraction form
   89,448/139,060 = 139,060/x
3. Step 3: Cross multiply
   89,448x = 139,060 × 139,060
4. Step 4: Simplify right side
   89,448x = 19,337,683,600
5. Step 5: Solve for x
   x = 19,337,683,600/89,448
6. Step 6: Final answer
   x = 216,189.11