Finding the Third Proportional to 9,990,369 and 21,849,090

Step by Step Solution

1. Step 1: Write the proportion equation
   9,990,369 : 21,849,090 = 21,849,090 : x
2. Step 2: Convert to fraction form
   9,990,369/21,849,090 = 21,849,090/x
3. Step 3: Cross multiply
   9,990,369x = 21,849,090 × 21,849,090
4. Step 4: Simplify right side
   9,990,369x = 477,382,733,828,100
5. Step 5: Solve for x
   x = 477,382,733,828,100/9,990,369
6. Step 6: Final answer
   x = 47,784,294.44