Finding the Third Proportional to 64,566 and 100,389

Step by Step Solution

1. Step 1: Write the proportion equation
   64,566 : 100,389 = 100,389 : x
2. Step 2: Convert to fraction form
   64,566/100,389 = 100,389/x
3. Step 3: Cross multiply
   64,566x = 100,389 × 100,389
4. Step 4: Simplify right side
   64,566x = 10,077,951,321
5. Step 5: Solve for x
   x = 10,077,951,321/64,566
6. Step 6: Final answer
   x = 156,087.59