Finding the Third Proportional to 9,778,955 and 21,240,778

Step by Step Solution

1. Step 1: Write the proportion equation
   9,778,955 : 21,240,778 = 21,240,778 : x
2. Step 2: Convert to fraction form
   9,778,955/21,240,778 = 21,240,778/x
3. Step 3: Cross multiply
   9,778,955x = 21,240,778 × 21,240,778
4. Step 4: Simplify right side
   9,778,955x = 451,170,650,045,284
5. Step 5: Solve for x
   x = 451,170,650,045,284/9,778,955
6. Step 6: Final answer
   x = 46,136,898.07