Finding the Third Proportional to 64,694.53 and 140,779.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,694.53 : 140,779.69 = 140,779.69 : x
2. Step 2: Convert to fraction form
   64,694.53/140,779.69 = 140,779.69/x
3. Step 3: Cross multiply
   64,694.53x = 140,779.69 × 140,779.69
4. Step 4: Simplify right side
   64,694.53x = 19,818,920,412.60
5. Step 5: Solve for x
   x = 19,818,920,412.60/64,694.53
6. Step 6: Final answer
   x = 306,346.15