Finding the Third Proportional to 90,318 and 137,834.25

Step by Step Solution

1. Step 1: Write the proportion equation
   90,318 : 137,834.25 = 137,834.25 : x
2. Step 2: Convert to fraction form
   90,318/137,834.25 = 137,834.25/x
3. Step 3: Cross multiply
   90,318x = 137,834.25 × 137,834.25
4. Step 4: Simplify right side
   90,318x = 18,998,280,473.06
5. Step 5: Solve for x
   x = 18,998,280,473.06/90,318
6. Step 6: Final answer
   x = 210,348.77