Finding the Third Proportional to 19,780 and 45,432

Step by Step Solution

1. Step 1: Write the proportion equation
   19,780 : 45,432 = 45,432 : x
2. Step 2: Convert to fraction form
   19,780/45,432 = 45,432/x
3. Step 3: Cross multiply
   19,780x = 45,432 × 45,432
4. Step 4: Simplify right side
   19,780x = 2,064,066,624
5. Step 5: Solve for x
   x = 2,064,066,624/19,780
6. Step 6: Final answer
   x = 104,351.19