Finding the Third Proportional to 175,158 and 385,308

Step by Step Solution

1. Step 1: Write the proportion equation
   175,158 : 385,308 = 385,308 : x
2. Step 2: Convert to fraction form
   175,158/385,308 = 385,308/x
3. Step 3: Cross multiply
   175,158x = 385,308 × 385,308
4. Step 4: Simplify right side
   175,158x = 148,462,254,864
5. Step 5: Solve for x
   x = 148,462,254,864/175,158
6. Step 6: Final answer
   x = 847,590.49