Finding the Third Proportional to 264,480 and 402,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   264,480 : 402,913.50 = 402,913.50 : x
2. Step 2: Convert to fraction form
   264,480/402,913.50 = 402,913.50/x
3. Step 3: Cross multiply
   264,480x = 402,913.50 × 402,913.50
4. Step 4: Simplify right side
   264,480x = 162,339,288,482.25
5. Step 5: Solve for x
   x = 162,339,288,482.25/264,480
6. Step 6: Final answer
   x = 613,805.54