Finding the Third Proportional to 686,858 and 1,488,052

Step by Step Solution

1. Step 1: Write the proportion equation
   686,858 : 1,488,052 = 1,488,052 : x
2. Step 2: Convert to fraction form
   686,858/1,488,052 = 1,488,052/x
3. Step 3: Cross multiply
   686,858x = 1,488,052 × 1,488,052
4. Step 4: Simplify right side
   686,858x = 2,214,298,754,704
5. Step 5: Solve for x
   x = 2,214,298,754,704/686,858
6. Step 6: Final answer
   x = 3,223,808.64