Finding the Third Proportional to 378,368 and 812,500

Step by Step Solution

1. Step 1: Write the proportion equation
   378,368 : 812,500 = 812,500 : x
2. Step 2: Convert to fraction form
   378,368/812,500 = 812,500/x
3. Step 3: Cross multiply
   378,368x = 812,500 × 812,500
4. Step 4: Simplify right side
   378,368x = 660,156,250,000
5. Step 5: Solve for x
   x = 660,156,250,000/378,368
6. Step 6: Final answer
   x = 1,744,746.52