Finding the Third Proportional to 28,365.19 and 42,904.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,365.19 : 42,904.69 = 42,904.69 : x
2. Step 2: Convert to fraction form
   28,365.19/42,904.69 = 42,904.69/x
3. Step 3: Cross multiply
   28,365.19x = 42,904.69 × 42,904.69
4. Step 4: Simplify right side
   28,365.19x = 1,840,812,209.47
5. Step 5: Solve for x
   x = 1,840,812,209.47/28,365.19
6. Step 6: Final answer
   x = 64,896.88