Finding the Third Proportional to 67,809.75 and 147,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,809.75 : 147,298.50 = 147,298.50 : x
2. Step 2: Convert to fraction form
   67,809.75/147,298.50 = 147,298.50/x
3. Step 3: Cross multiply
   67,809.75x = 147,298.50 × 147,298.50
4. Step 4: Simplify right side
   67,809.75x = 21,696,848,102.25
5. Step 5: Solve for x
   x = 21,696,848,102.25/67,809.75
6. Step 6: Final answer
   x = 319,966.50