Finding the Third Proportional to 90,628 and 137,862

Step by Step Solution

1. Step 1: Write the proportion equation
   90,628 : 137,862 = 137,862 : x
2. Step 2: Convert to fraction form
   90,628/137,862 = 137,862/x
3. Step 3: Cross multiply
   90,628x = 137,862 × 137,862
4. Step 4: Simplify right side
   90,628x = 19,005,931,044
5. Step 5: Solve for x
   x = 19,005,931,044/90,628
6. Step 6: Final answer
   x = 209,713.68