Finding the Third Proportional to 67,298,438 and 146,406,676

Step by Step Solution

1. Step 1: Write the proportion equation
   67,298,438 : 146,406,676 = 146,406,676 : x
2. Step 2: Convert to fraction form
   67,298,438/146,406,676 = 146,406,676/x
3. Step 3: Cross multiply
   67,298,438x = 146,406,676 × 146,406,676
4. Step 4: Simplify right side
   67,298,438x = 21,434,914,777,368,976
5. Step 5: Solve for x
   x = 21,434,914,777,368,976/67,298,438
6. Step 6: Final answer
   x = 318,505,383.10