Finding the Third Proportional to 163,447.50 and 356,784

Step by Step Solution

1. Step 1: Write the proportion equation
   163,447.50 : 356,784 = 356,784 : x
2. Step 2: Convert to fraction form
   163,447.50/356,784 = 356,784/x
3. Step 3: Cross multiply
   163,447.50x = 356,784 × 356,784
4. Step 4: Simplify right side
   163,447.50x = 127,294,822,656
5. Step 5: Solve for x
   x = 127,294,822,656/163,447.50
6. Step 6: Final answer
   x = 778,811.68