Finding the Third Proportional to 129,470 and 200,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,470 : 200,925.50 = 200,925.50 : x
2. Step 2: Convert to fraction form
   129,470/200,925.50 = 200,925.50/x
3. Step 3: Cross multiply
   129,470x = 200,925.50 × 200,925.50
4. Step 4: Simplify right side
   129,470x = 40,371,056,550.25
5. Step 5: Solve for x
   x = 40,371,056,550.25/129,470
6. Step 6: Final answer
   x = 311,817.85