Finding the Third Proportional to 179,303 and 390,146

Step by Step Solution

1. Step 1: Write the proportion equation
   179,303 : 390,146 = 390,146 : x
2. Step 2: Convert to fraction form
   179,303/390,146 = 390,146/x
3. Step 3: Cross multiply
   179,303x = 390,146 × 390,146
4. Step 4: Simplify right side
   179,303x = 152,213,901,316
5. Step 5: Solve for x
   x = 152,213,901,316/179,303
6. Step 6: Final answer
   x = 848,919.99