Finding the Third Proportional to 42,428.25 and 64,179

Step by Step Solution

1. Step 1: Write the proportion equation
   42,428.25 : 64,179 = 64,179 : x
2. Step 2: Convert to fraction form
   42,428.25/64,179 = 64,179/x
3. Step 3: Cross multiply
   42,428.25x = 64,179 × 64,179
4. Step 4: Simplify right side
   42,428.25x = 4,118,944,041
5. Step 5: Solve for x
   x = 4,118,944,041/42,428.25
6. Step 6: Final answer
   x = 97,080.22