Finding the Third Proportional to 42,968,938 and 68,151,400

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968,938 : 68,151,400 = 68,151,400 : x
2. Step 2: Convert to fraction form
   42,968,938/68,151,400 = 68,151,400/x
3. Step 3: Cross multiply
   42,968,938x = 68,151,400 × 68,151,400
4. Step 4: Simplify right side
   42,968,938x = 4,644,613,321,960,000
5. Step 5: Solve for x
   x = 4,644,613,321,960,000/42,968,938
6. Step 6: Final answer
   x = 108,092,346.20