Finding the Third Proportional to 152,718 and 253,068.75

Step by Step Solution

1. Step 1: Write the proportion equation
   152,718 : 253,068.75 = 253,068.75 : x
2. Step 2: Convert to fraction form
   152,718/253,068.75 = 253,068.75/x
3. Step 3: Cross multiply
   152,718x = 253,068.75 × 253,068.75
4. Step 4: Simplify right side
   152,718x = 64,043,792,226.56
5. Step 5: Solve for x
   x = 64,043,792,226.56/152,718
6. Step 6: Final answer
   x = 419,359.81