Finding the Third Proportional to 9,919,368 and 21,029,264

Step by Step Solution

1. Step 1: Write the proportion equation
   9,919,368 : 21,029,264 = 21,029,264 : x
2. Step 2: Convert to fraction form
   9,919,368/21,029,264 = 21,029,264/x
3. Step 3: Cross multiply
   9,919,368x = 21,029,264 × 21,029,264
4. Step 4: Simplify right side
   9,919,368x = 442,229,944,381,696
5. Step 5: Solve for x
   x = 442,229,944,381,696/9,919,368
6. Step 6: Final answer
   x = 44,582,471.82