Finding the Third Proportional to 688,196 and 1,036,272

Step by Step Solution

1. Step 1: Write the proportion equation
   688,196 : 1,036,272 = 1,036,272 : x
2. Step 2: Convert to fraction form
   688,196/1,036,272 = 1,036,272/x
3. Step 3: Cross multiply
   688,196x = 1,036,272 × 1,036,272
4. Step 4: Simplify right side
   688,196x = 1,073,859,657,984
5. Step 5: Solve for x
   x = 1,073,859,657,984/688,196
6. Step 6: Final answer
   x = 1,560,397.99