Finding the Third Proportional to 70,138 and 150,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,138 : 150,124.50 = 150,124.50 : x
2. Step 2: Convert to fraction form
   70,138/150,124.50 = 150,124.50/x
3. Step 3: Cross multiply
   70,138x = 150,124.50 × 150,124.50
4. Step 4: Simplify right side
   70,138x = 22,537,365,500.25
5. Step 5: Solve for x
   x = 22,537,365,500.25/70,138
6. Step 6: Final answer
   x = 321,328.89