Finding the Third Proportional to 31,243 and 64,566

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243 : 64,566 = 64,566 : x
2. Step 2: Convert to fraction form
   31,243/64,566 = 64,566/x
3. Step 3: Cross multiply
   31,243x = 64,566 × 64,566
4. Step 4: Simplify right side
   31,243x = 4,168,768,356
5. Step 5: Solve for x
   x = 4,168,768,356/31,243
6. Step 6: Final answer
   x = 133,430.48