Finding the Third Proportional to 281,088,235.50 and 419,978,977.88

Step by Step Solution

1. Step 1: Write the proportion equation
   281,088,235.50 : 419,978,977.88 = 419,978,977.88 : x
2. Step 2: Convert to fraction form
   281,088,235.50/419,978,977.88 = 419,978,977.88/x
3. Step 3: Cross multiply
   281,088,235.50x = 419,978,977.88 × 419,978,977.88
4. Step 4: Simplify right side
   281,088,235.50x = 176,382,341,856,929,728
5. Step 5: Solve for x
   x = 176,382,341,856,929,728/281,088,235.50
6. Step 6: Final answer
   x = 627,498,128.99