Finding the Third Proportional to 42,611 and 64,803

Step by Step Solution

1. Step 1: Write the proportion equation
   42,611 : 64,803 = 64,803 : x
2. Step 2: Convert to fraction form
   42,611/64,803 = 64,803/x
3. Step 3: Cross multiply
   42,611x = 64,803 × 64,803
4. Step 4: Simplify right side
   42,611x = 4,199,428,809
5. Step 5: Solve for x
   x = 4,199,428,809/42,611
6. Step 6: Final answer
   x = 98,552.69