Finding the Third Proportional to 90,654 and 137,979

Step by Step Solution

1. Step 1: Write the proportion equation
   90,654 : 137,979 = 137,979 : x
2. Step 2: Convert to fraction form
   90,654/137,979 = 137,979/x
3. Step 3: Cross multiply
   90,654x = 137,979 × 137,979
4. Step 4: Simplify right side
   90,654x = 19,038,204,441
5. Step 5: Solve for x
   x = 19,038,204,441/90,654
6. Step 6: Final answer
   x = 210,009.54