Finding the Third Proportional to 359,487 and 550,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,487 : 550,138.50 = 550,138.50 : x
2. Step 2: Convert to fraction form
   359,487/550,138.50 = 550,138.50/x
3. Step 3: Cross multiply
   359,487x = 550,138.50 × 550,138.50
4. Step 4: Simplify right side
   359,487x = 302,652,369,182.25
5. Step 5: Solve for x
   x = 302,652,369,182.25/359,487
6. Step 6: Final answer
   x = 841,900.73