Finding the Third Proportional to 42,777,816 and 89,080,728

Step by Step Solution

1. Step 1: Write the proportion equation
   42,777,816 : 89,080,728 = 89,080,728 : x
2. Step 2: Convert to fraction form
   42,777,816/89,080,728 = 89,080,728/x
3. Step 3: Cross multiply
   42,777,816x = 89,080,728 × 89,080,728
4. Step 4: Simplify right side
   42,777,816x = 7,935,376,101,009,984
5. Step 5: Solve for x
   x = 7,935,376,101,009,984/42,777,816
6. Step 6: Final answer
   x = 185,502,132.72