Finding the Third Proportional to 1,618,424 and 3,546,448

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618,424 : 3,546,448 = 3,546,448 : x
2. Step 2: Convert to fraction form
   1,618,424/3,546,448 = 3,546,448/x
3. Step 3: Cross multiply
   1,618,424x = 3,546,448 × 3,546,448
4. Step 4: Simplify right side
   1,618,424x = 12,577,293,416,704
5. Step 5: Solve for x
   x = 12,577,293,416,704/1,618,424
6. Step 6: Final answer
   x = 7,771,321.62