Finding the Third Proportional to 9,893,840,472 and 21,565,449,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,893,840,472 : 21,565,449,436.50 = 21,565,449,436.50 : x
2. Step 2: Convert to fraction form
   9,893,840,472/21,565,449,436.50 = 21,565,449,436.50/x
3. Step 3: Cross multiply
   9,893,840,472x = 21,565,449,436.50 × 21,565,449,436.50
4. Step 4: Simplify right side
   9,893,840,472x = 465,068,609,398,238,150,656
5. Step 5: Solve for x
   x = 465,068,609,398,238,150,656/9,893,840,472
6. Step 6: Final answer
   x = 47,005,873,069.65