Finding the Third Proportional to 386,030.25 and 556,902

Step by Step Solution

1. Step 1: Write the proportion equation
   386,030.25 : 556,902 = 556,902 : x
2. Step 2: Convert to fraction form
   386,030.25/556,902 = 556,902/x
3. Step 3: Cross multiply
   386,030.25x = 556,902 × 556,902
4. Step 4: Simplify right side
   386,030.25x = 310,139,837,604
5. Step 5: Solve for x
   x = 310,139,837,604/386,030.25
6. Step 6: Final answer
   x = 803,408.12