Finding the Third Proportional to 328,617 and 529,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,617 : 529,069.50 = 529,069.50 : x
2. Step 2: Convert to fraction form
   328,617/529,069.50 = 529,069.50/x
3. Step 3: Cross multiply
   328,617x = 529,069.50 × 529,069.50
4. Step 4: Simplify right side
   328,617x = 279,914,535,830.25
5. Step 5: Solve for x
   x = 279,914,535,830.25/328,617
6. Step 6: Final answer
   x = 851,795.66