Finding the Third Proportional to 42,067,845 and 64,621,359

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067,845 : 64,621,359 = 64,621,359 : x
2. Step 2: Convert to fraction form
   42,067,845/64,621,359 = 64,621,359/x
3. Step 3: Cross multiply
   42,067,845x = 64,621,359 × 64,621,359
4. Step 4: Simplify right side
   42,067,845x = 4,175,920,039,006,881
5. Step 5: Solve for x
   x = 4,175,920,039,006,881/42,067,845
6. Step 6: Final answer
   x = 99,266,317.04