Finding the Third Proportional to 42,959 and 64,911

Step by Step Solution

1. Step 1: Write the proportion equation
   42,959 : 64,911 = 64,911 : x
2. Step 2: Convert to fraction form
   42,959/64,911 = 64,911/x
3. Step 3: Cross multiply
   42,959x = 64,911 × 64,911
4. Step 4: Simplify right side
   42,959x = 4,213,437,921
5. Step 5: Solve for x
   x = 4,213,437,921/42,959
6. Step 6: Final answer
   x = 98,080.45