Finding the Third Proportional to 493,456 and 780,600

Step by Step Solution

1. Step 1: Write the proportion equation
   493,456 : 780,600 = 780,600 : x
2. Step 2: Convert to fraction form
   493,456/780,600 = 780,600/x
3. Step 3: Cross multiply
   493,456x = 780,600 × 780,600
4. Step 4: Simplify right side
   493,456x = 609,336,360,000
5. Step 5: Solve for x
   x = 609,336,360,000/493,456
6. Step 6: Final answer
   x = 1,234,834.23