Finding the Third Proportional to 9,679,284 and 21,065,520

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679,284 : 21,065,520 = 21,065,520 : x
2. Step 2: Convert to fraction form
   9,679,284/21,065,520 = 21,065,520/x
3. Step 3: Cross multiply
   9,679,284x = 21,065,520 × 21,065,520
4. Step 4: Simplify right side
   9,679,284x = 443,756,132,870,400
5. Step 5: Solve for x
   x = 443,756,132,870,400/9,679,284
6. Step 6: Final answer
   x = 45,845,966.80