Finding the Third Proportional to 356,631.50 and 529,054.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,631.50 : 529,054.50 = 529,054.50 : x
2. Step 2: Convert to fraction form
   356,631.50/529,054.50 = 529,054.50/x
3. Step 3: Cross multiply
   356,631.50x = 529,054.50 × 529,054.50
4. Step 4: Simplify right side
   356,631.50x = 279,898,663,970.25
5. Step 5: Solve for x
   x = 279,898,663,970.25/356,631.50
6. Step 6: Final answer
   x = 784,839.99