Finding the Third Proportional to 340,699.50 and 529,039.69

Step by Step Solution

1. Step 1: Write the proportion equation
   340,699.50 : 529,039.69 = 529,039.69 : x
2. Step 2: Convert to fraction form
   340,699.50/529,039.69 = 529,039.69/x
3. Step 3: Cross multiply
   340,699.50x = 529,039.69 × 529,039.69
4. Step 4: Simplify right side
   340,699.50x = 279,882,990,950.10
5. Step 5: Solve for x
   x = 279,882,990,950.10/340,699.50
6. Step 6: Final answer
   x = 821,495.16