Finding the Third Proportional to 359,696 and 756,400

Step by Step Solution

1. Step 1: Write the proportion equation
   359,696 : 756,400 = 756,400 : x
2. Step 2: Convert to fraction form
   359,696/756,400 = 756,400/x
3. Step 3: Cross multiply
   359,696x = 756,400 × 756,400
4. Step 4: Simplify right side
   359,696x = 572,140,960,000
5. Step 5: Solve for x
   x = 572,140,960,000/359,696
6. Step 6: Final answer
   x = 1,590,623.64