Finding the Third Proportional to 147,799 and 216,454.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,799 : 216,454.50 = 216,454.50 : x
2. Step 2: Convert to fraction form
   147,799/216,454.50 = 216,454.50/x
3. Step 3: Cross multiply
   147,799x = 216,454.50 × 216,454.50
4. Step 4: Simplify right side
   147,799x = 46,852,550,570.25
5. Step 5: Solve for x
   x = 46,852,550,570.25/147,799
6. Step 6: Final answer
   x = 317,001.81