Finding the Third Proportional to 65,870.72 and 141,731.65

Step by Step Solution

1. Step 1: Write the proportion equation
   65,870.72 : 141,731.65 = 141,731.65 : x
2. Step 2: Convert to fraction form
   65,870.72/141,731.65 = 141,731.65/x
3. Step 3: Cross multiply
   65,870.72x = 141,731.65 × 141,731.65
4. Step 4: Simplify right side
   65,870.72x = 20,087,860,168.81
5. Step 5: Solve for x
   x = 20,087,860,168.81/65,870.72
6. Step 6: Final answer
   x = 304,958.87