Finding the Third Proportional to 105,819,563 and 215,890,492

Step by Step Solution

1. Step 1: Write the proportion equation
   105,819,563 : 215,890,492 = 215,890,492 : x
2. Step 2: Convert to fraction form
   105,819,563/215,890,492 = 215,890,492/x
3. Step 3: Cross multiply
   105,819,563x = 215,890,492 × 215,890,492
4. Step 4: Simplify right side
   105,819,563x = 46,608,704,536,002,064
5. Step 5: Solve for x
   x = 46,608,704,536,002,064/105,819,563
6. Step 6: Final answer
   x = 440,454,517.24