Finding the Third Proportional to 42,067,893 and 64,621,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067,893 : 64,621,435.50 = 64,621,435.50 : x
2. Step 2: Convert to fraction form
   42,067,893/64,621,435.50 = 64,621,435.50/x
3. Step 3: Cross multiply
   42,067,893x = 64,621,435.50 × 64,621,435.50
4. Step 4: Simplify right side
   42,067,893x = 4,175,929,926,080,660
5. Step 5: Solve for x
   x = 4,175,929,926,080,660/42,067,893
6. Step 6: Final answer
   x = 99,266,438.80