Finding the Third Proportional to 64,697.91 and 141,390.56

Step by Step Solution

1. Step 1: Write the proportion equation
   64,697.91 : 141,390.56 = 141,390.56 : x
2. Step 2: Convert to fraction form
   64,697.91/141,390.56 = 141,390.56/x
3. Step 3: Cross multiply
   64,697.91x = 141,390.56 × 141,390.56
4. Step 4: Simplify right side
   64,697.91x = 19,991,291,164.07
5. Step 5: Solve for x
   x = 19,991,291,164.07/64,697.91
6. Step 6: Final answer
   x = 308,994.41