Finding the Third Proportional to 72,321 and 148,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,321 : 148,165.50 = 148,165.50 : x
2. Step 2: Convert to fraction form
   72,321/148,165.50 = 148,165.50/x
3. Step 3: Cross multiply
   72,321x = 148,165.50 × 148,165.50
4. Step 4: Simplify right side
   72,321x = 21,953,015,390.25
5. Step 5: Solve for x
   x = 21,953,015,390.25/72,321
6. Step 6: Final answer
   x = 303,549.67