Finding the Third Proportional to 28,490,448 and 67,187,298

Step by Step Solution

1. Step 1: Write the proportion equation
   28,490,448 : 67,187,298 = 67,187,298 : x
2. Step 2: Convert to fraction form
   28,490,448/67,187,298 = 67,187,298/x
3. Step 3: Cross multiply
   28,490,448x = 67,187,298 × 67,187,298
4. Step 4: Simplify right side
   28,490,448x = 4,514,133,012,540,804
5. Step 5: Solve for x
   x = 4,514,133,012,540,804/28,490,448
6. Step 6: Final answer
   x = 158,443,735.69