Finding the Third Proportional to 28,436 and 45,430

Step by Step Solution

1. Step 1: Write the proportion equation
   28,436 : 45,430 = 45,430 : x
2. Step 2: Convert to fraction form
   28,436/45,430 = 45,430/x
3. Step 3: Cross multiply
   28,436x = 45,430 × 45,430
4. Step 4: Simplify right side
   28,436x = 2,063,884,900
5. Step 5: Solve for x
   x = 2,063,884,900/28,436
6. Step 6: Final answer
   x = 72,580.00