Finding the Third Proportional to 90,612 and 137,916

Step by Step Solution

1. Step 1: Write the proportion equation
   90,612 : 137,916 = 137,916 : x
2. Step 2: Convert to fraction form
   90,612/137,916 = 137,916/x
3. Step 3: Cross multiply
   90,612x = 137,916 × 137,916
4. Step 4: Simplify right side
   90,612x = 19,020,823,056
5. Step 5: Solve for x
   x = 19,020,823,056/90,612
6. Step 6: Final answer
   x = 209,915.06