Finding the Third Proportional to 484,360 and 664,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   484,360 : 664,897.50 = 664,897.50 : x
2. Step 2: Convert to fraction form
   484,360/664,897.50 = 664,897.50/x
3. Step 3: Cross multiply
   484,360x = 664,897.50 × 664,897.50
4. Step 4: Simplify right side
   484,360x = 442,088,685,506.25
5. Step 5: Solve for x
   x = 442,088,685,506.25/484,360
6. Step 6: Final answer
   x = 912,727.49