Finding the Third Proportional to 42,512,120 and 67,677,780

Step by Step Solution

1. Step 1: Write the proportion equation
   42,512,120 : 67,677,780 = 67,677,780 : x
2. Step 2: Convert to fraction form
   42,512,120/67,677,780 = 67,677,780/x
3. Step 3: Cross multiply
   42,512,120x = 67,677,780 × 67,677,780
4. Step 4: Simplify right side
   42,512,120x = 4,580,281,905,728,400
5. Step 5: Solve for x
   x = 4,580,281,905,728,400/42,512,120
6. Step 6: Final answer
   x = 107,740,613.87