Finding the Third Proportional to 67,298,436 and 146,406,672

Step by Step Solution

1. Step 1: Write the proportion equation
   67,298,436 : 146,406,672 = 146,406,672 : x
2. Step 2: Convert to fraction form
   67,298,436/146,406,672 = 146,406,672/x
3. Step 3: Cross multiply
   67,298,436x = 146,406,672 × 146,406,672
4. Step 4: Simplify right side
   67,298,436x = 21,434,913,606,115,584
5. Step 5: Solve for x
   x = 21,434,913,606,115,584/67,298,436
6. Step 6: Final answer
   x = 318,505,375.16