Finding the Third Proportional to 354,807 and 510,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   354,807 : 510,061.50 = 510,061.50 : x
2. Step 2: Convert to fraction form
   354,807/510,061.50 = 510,061.50/x
3. Step 3: Cross multiply
   354,807x = 510,061.50 × 510,061.50
4. Step 4: Simplify right side
   354,807x = 260,162,733,782.25
5. Step 5: Solve for x
   x = 260,162,733,782.25/354,807
6. Step 6: Final answer
   x = 733,251.41