Finding the Third Proportional to 64,290 and 141,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,290 : 141,034.50 = 141,034.50 : x
2. Step 2: Convert to fraction form
   64,290/141,034.50 = 141,034.50/x
3. Step 3: Cross multiply
   64,290x = 141,034.50 × 141,034.50
4. Step 4: Simplify right side
   64,290x = 19,890,730,190.25
5. Step 5: Solve for x
   x = 19,890,730,190.25/64,290
6. Step 6: Final answer
   x = 309,390.73