Finding the Third Proportional to 9,778,944 and 21,240,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,944 : 21,240,757.50 = 21,240,757.50 : x
2. Step 2: Convert to fraction form
   9,778,944/21,240,757.50 = 21,240,757.50/x
3. Step 3: Cross multiply
   9,778,944x = 21,240,757.50 × 21,240,757.50
4. Step 4: Simplify right side
   9,778,944x = 451,169,779,173,806.25
5. Step 5: Solve for x
   x = 451,169,779,173,806.25/9,778,944
6. Step 6: Final answer
   x = 46,136,860.91