Finding the Third Proportional to 67,298,440 and 146,406,680

Step by Step Solution

1. Step 1: Write the proportion equation
   67,298,440 : 146,406,680 = 146,406,680 : x
2. Step 2: Convert to fraction form
   67,298,440/146,406,680 = 146,406,680/x
3. Step 3: Cross multiply
   67,298,440x = 146,406,680 × 146,406,680
4. Step 4: Simplify right side
   67,298,440x = 21,434,915,948,622,400
5. Step 5: Solve for x
   x = 21,434,915,948,622,400/67,298,440
6. Step 6: Final answer
   x = 318,505,391.04