Finding the Third Proportional to 1,663,220 and 3,500,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,220 : 3,500,312 = 3,500,312 : x
2. Step 2: Convert to fraction form
   1,663,220/3,500,312 = 3,500,312/x
3. Step 3: Cross multiply
   1,663,220x = 3,500,312 × 3,500,312
4. Step 4: Simplify right side
   1,663,220x = 12,252,184,097,344
5. Step 5: Solve for x
   x = 12,252,184,097,344/1,663,220
6. Step 6: Final answer
   x = 7,366,544.47