Finding the Third Proportional to 281,970,908 and 431,060,870

Step by Step Solution

1. Step 1: Write the proportion equation
   281,970,908 : 431,060,870 = 431,060,870 : x
2. Step 2: Convert to fraction form
   281,970,908/431,060,870 = 431,060,870/x
3. Step 3: Cross multiply
   281,970,908x = 431,060,870 × 431,060,870
4. Step 4: Simplify right side
   281,970,908x = 185,813,473,645,156,896
5. Step 5: Solve for x
   x = 185,813,473,645,156,896/281,970,908
6. Step 6: Final answer
   x = 658,981,009.65