Finding the Third Proportional to 9,969,117 and 21,687,798

Step by Step Solution

1. Step 1: Write the proportion equation
   9,969,117 : 21,687,798 = 21,687,798 : x
2. Step 2: Convert to fraction form
   9,969,117/21,687,798 = 21,687,798/x
3. Step 3: Cross multiply
   9,969,117x = 21,687,798 × 21,687,798
4. Step 4: Simplify right side
   9,969,117x = 470,360,582,088,804
5. Step 5: Solve for x
   x = 470,360,582,088,804/9,969,117
6. Step 6: Final answer
   x = 47,181,769.67