Finding the Third Proportional to 9,778,872 and 21,960,528

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,872 : 21,960,528 = 21,960,528 : x
2. Step 2: Convert to fraction form
   9,778,872/21,960,528 = 21,960,528/x
3. Step 3: Cross multiply
   9,778,872x = 21,960,528 × 21,960,528
4. Step 4: Simplify right side
   9,778,872x = 482,264,790,038,784
5. Step 5: Solve for x
   x = 482,264,790,038,784/9,778,872
6. Step 6: Final answer
   x = 49,317,016.32