Finding the Third Proportional to 58,742 and 89,487

Step by Step Solution

1. Step 1: Write the proportion equation
   58,742 : 89,487 = 89,487 : x
2. Step 2: Convert to fraction form
   58,742/89,487 = 89,487/x
3. Step 3: Cross multiply
   58,742x = 89,487 × 89,487
4. Step 4: Simplify right side
   58,742x = 8,007,923,169
5. Step 5: Solve for x
   x = 8,007,923,169/58,742
6. Step 6: Final answer
   x = 136,323.64