Finding the Third Proportional to 1,686,320 and 3,654,808

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,320 : 3,654,808 = 3,654,808 : x
2. Step 2: Convert to fraction form
   1,686,320/3,654,808 = 3,654,808/x
3. Step 3: Cross multiply
   1,686,320x = 3,654,808 × 3,654,808
4. Step 4: Simplify right side
   1,686,320x = 13,357,621,516,864
5. Step 5: Solve for x
   x = 13,357,621,516,864/1,686,320
6. Step 6: Final answer
   x = 7,921,166.51