Finding the Third Proportional to 686,560 and 1,495,172

Step by Step Solution

1. Step 1: Write the proportion equation
   686,560 : 1,495,172 = 1,495,172 : x
2. Step 2: Convert to fraction form
   686,560/1,495,172 = 1,495,172/x
3. Step 3: Cross multiply
   686,560x = 1,495,172 × 1,495,172
4. Step 4: Simplify right side
   686,560x = 2,235,539,309,584
5. Step 5: Solve for x
   x = 2,235,539,309,584/686,560
6. Step 6: Final answer
   x = 3,256,145.58