Finding the Third Proportional to 359,487 and 782,392.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,487 : 782,392.50 = 782,392.50 : x
2. Step 2: Convert to fraction form
   359,487/782,392.50 = 782,392.50/x
3. Step 3: Cross multiply
   359,487x = 782,392.50 × 782,392.50
4. Step 4: Simplify right side
   359,487x = 612,138,024,056.25
5. Step 5: Solve for x
   x = 612,138,024,056.25/359,487
6. Step 6: Final answer
   x = 1,702,809.90