Finding the Third Proportional to 71,138 and 152,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,138 : 152,418.50 = 152,418.50 : x
2. Step 2: Convert to fraction form
   71,138/152,418.50 = 152,418.50/x
3. Step 3: Cross multiply
   71,138x = 152,418.50 × 152,418.50
4. Step 4: Simplify right side
   71,138x = 23,231,399,142.25
5. Step 5: Solve for x
   x = 23,231,399,142.25/71,138
6. Step 6: Final answer
   x = 326,568.07