Finding the Third Proportional to 27,878,320 and 42,237,816

Step by Step Solution

1. Step 1: Write the proportion equation
   27,878,320 : 42,237,816 = 42,237,816 : x
2. Step 2: Convert to fraction form
   27,878,320/42,237,816 = 42,237,816/x
3. Step 3: Cross multiply
   27,878,320x = 42,237,816 × 42,237,816
4. Step 4: Simplify right side
   27,878,320x = 1,784,033,100,449,856
5. Step 5: Solve for x
   x = 1,784,033,100,449,856/27,878,320
6. Step 6: Final answer
   x = 63,993,565.63