Finding the Third Proportional to 45,128 and 67,432

Step by Step Solution

1. Step 1: Write the proportion equation
   45,128 : 67,432 = 67,432 : x
2. Step 2: Convert to fraction form
   45,128/67,432 = 67,432/x
3. Step 3: Cross multiply
   45,128x = 67,432 × 67,432
4. Step 4: Simplify right side
   45,128x = 4,547,074,624
5. Step 5: Solve for x
   x = 4,547,074,624/45,128
6. Step 6: Final answer
   x = 100,759.50