Finding the Third Proportional to 484,342 and 664,871.50

Step by Step Solution

1. Step 1: Write the proportion equation
   484,342 : 664,871.50 = 664,871.50 : x
2. Step 2: Convert to fraction form
   484,342/664,871.50 = 664,871.50/x
3. Step 3: Cross multiply
   484,342x = 664,871.50 × 664,871.50
4. Step 4: Simplify right side
   484,342x = 442,054,111,512.25
5. Step 5: Solve for x
   x = 442,054,111,512.25/484,342
6. Step 6: Final answer
   x = 912,690.02