Finding the Third Proportional to 686,212 and 1,512,032

Step by Step Solution

1. Step 1: Write the proportion equation
   686,212 : 1,512,032 = 1,512,032 : x
2. Step 2: Convert to fraction form
   686,212/1,512,032 = 1,512,032/x
3. Step 3: Cross multiply
   686,212x = 1,512,032 × 1,512,032
4. Step 4: Simplify right side
   686,212x = 2,286,240,769,024
5. Step 5: Solve for x
   x = 2,286,240,769,024/686,212
6. Step 6: Final answer
   x = 3,331,682.88