Finding the Third Proportional to 680,240 and 1,061,715

Step by Step Solution

1. Step 1: Write the proportion equation
   680,240 : 1,061,715 = 1,061,715 : x
2. Step 2: Convert to fraction form
   680,240/1,061,715 = 1,061,715/x
3. Step 3: Cross multiply
   680,240x = 1,061,715 × 1,061,715
4. Step 4: Simplify right side
   680,240x = 1,127,238,741,225
5. Step 5: Solve for x
   x = 1,127,238,741,225/680,240
6. Step 6: Final answer
   x = 1,657,119.17