Finding the Third Proportional to 484,356 and 664,888.50

Step by Step Solution

1. Step 1: Write the proportion equation
   484,356 : 664,888.50 = 664,888.50 : x
2. Step 2: Convert to fraction form
   484,356/664,888.50 = 664,888.50/x
3. Step 3: Cross multiply
   484,356x = 664,888.50 × 664,888.50
4. Step 4: Simplify right side
   484,356x = 442,076,717,432.25
5. Step 5: Solve for x
   x = 442,076,717,432.25/484,356
6. Step 6: Final answer
   x = 912,710.32