Finding the Third Proportional to 30,457.13 and 45,685.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,457.13 : 45,685.69 = 45,685.69 : x
2. Step 2: Convert to fraction form
   30,457.13/45,685.69 = 45,685.69/x
3. Step 3: Cross multiply
   30,457.13x = 45,685.69 × 45,685.69
4. Step 4: Simplify right side
   30,457.13x = 2,087,182,042.35
5. Step 5: Solve for x
   x = 2,087,182,042.35/30,457.13
6. Step 6: Final answer
   x = 68,528.53