Finding the Third Proportional to 42,067,941 and 64,621,509

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067,941 : 64,621,509 = 64,621,509 : x
2. Step 2: Convert to fraction form
   42,067,941/64,621,509 = 64,621,509/x
3. Step 3: Cross multiply
   42,067,941x = 64,621,509 × 64,621,509
4. Step 4: Simplify right side
   42,067,941x = 4,175,939,425,437,081
5. Step 5: Solve for x
   x = 4,175,939,425,437,081/42,067,941
6. Step 6: Final answer
   x = 99,266,551.35