Finding the Third Proportional to 90,443.25 and 137,770.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,443.25 : 137,770.88 = 137,770.88 : x
2. Step 2: Convert to fraction form
   90,443.25/137,770.88 = 137,770.88/x
3. Step 3: Cross multiply
   90,443.25x = 137,770.88 × 137,770.88
4. Step 4: Simplify right side
   90,443.25x = 18,980,813,998.27
5. Step 5: Solve for x
   x = 18,980,813,998.27/90,443.25
6. Step 6: Final answer
   x = 209,864.35