Finding the Third Proportional to 1,680,424 and 3,687,385

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,424 : 3,687,385 = 3,687,385 : x
2. Step 2: Convert to fraction form
   1,680,424/3,687,385 = 3,687,385/x
3. Step 3: Cross multiply
   1,680,424x = 3,687,385 × 3,687,385
4. Step 4: Simplify right side
   1,680,424x = 13,596,808,138,225
5. Step 5: Solve for x
   x = 13,596,808,138,225/1,680,424
6. Step 6: Final answer
   x = 8,091,296.09