Finding the Third Proportional to 1,680,416 and 3,687,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,416 : 3,687,400 = 3,687,400 : x
2. Step 2: Convert to fraction form
   1,680,416/3,687,400 = 3,687,400/x
3. Step 3: Cross multiply
   1,680,416x = 3,687,400 × 3,687,400
4. Step 4: Simplify right side
   1,680,416x = 13,596,918,760,000
5. Step 5: Solve for x
   x = 13,596,918,760,000/1,680,416
6. Step 6: Final answer
   x = 8,091,400.44