Finding the Third Proportional to 346,532 and 518,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   346,532 : 518,387.50 = 518,387.50 : x
2. Step 2: Convert to fraction form
   346,532/518,387.50 = 518,387.50/x
3. Step 3: Cross multiply
   346,532x = 518,387.50 × 518,387.50
4. Step 4: Simplify right side
   346,532x = 268,725,600,156.25
5. Step 5: Solve for x
   x = 268,725,600,156.25/346,532
6. Step 6: Final answer
   x = 775,471.24