Finding the Third Proportional to 42,067,943 and 64,621,512

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067,943 : 64,621,512 = 64,621,512 : x
2. Step 2: Convert to fraction form
   42,067,943/64,621,512 = 64,621,512/x
3. Step 3: Cross multiply
   42,067,943x = 64,621,512 × 64,621,512
4. Step 4: Simplify right side
   42,067,943x = 4,175,939,813,166,144
5. Step 5: Solve for x
   x = 4,175,939,813,166,144/42,067,943
6. Step 6: Final answer
   x = 99,266,555.85