Finding the Third Proportional to 42,259 and 64,961

Step by Step Solution

1. Step 1: Write the proportion equation
   42,259 : 64,961 = 64,961 : x
2. Step 2: Convert to fraction form
   42,259/64,961 = 64,961/x
3. Step 3: Cross multiply
   42,259x = 64,961 × 64,961
4. Step 4: Simplify right side
   42,259x = 4,219,931,521
5. Step 5: Solve for x
   x = 4,219,931,521/42,259
6. Step 6: Final answer
   x = 99,858.76