Finding the Third Proportional to 359,548 and 780,212

Step by Step Solution

1. Step 1: Write the proportion equation
   359,548 : 780,212 = 780,212 : x
2. Step 2: Convert to fraction form
   359,548/780,212 = 780,212/x
3. Step 3: Cross multiply
   359,548x = 780,212 × 780,212
4. Step 4: Simplify right side
   359,548x = 608,730,764,944
5. Step 5: Solve for x
   x = 608,730,764,944/359,548
6. Step 6: Final answer
   x = 1,693,044.50