Finding the Third Proportional to 1,647,220 and 3,609,368

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647,220 : 3,609,368 = 3,609,368 : x
2. Step 2: Convert to fraction form
   1,647,220/3,609,368 = 3,609,368/x
3. Step 3: Cross multiply
   1,647,220x = 3,609,368 × 3,609,368
4. Step 4: Simplify right side
   1,647,220x = 13,027,537,359,424
5. Step 5: Solve for x
   x = 13,027,537,359,424/1,647,220
6. Step 6: Final answer
   x = 7,908,802.32