Finding the Third Proportional to 686,961 and 1,488,294

Step by Step Solution

1. Step 1: Write the proportion equation
   686,961 : 1,488,294 = 1,488,294 : x
2. Step 2: Convert to fraction form
   686,961/1,488,294 = 1,488,294/x
3. Step 3: Cross multiply
   686,961x = 1,488,294 × 1,488,294
4. Step 4: Simplify right side
   686,961x = 2,215,019,030,436
5. Step 5: Solve for x
   x = 2,215,019,030,436/686,961
6. Step 6: Final answer
   x = 3,224,373.77