Finding the Third Proportional to 238,308 and 349,442

Step by Step Solution

1. Step 1: Write the proportion equation
   238,308 : 349,442 = 349,442 : x
2. Step 2: Convert to fraction form
   238,308/349,442 = 349,442/x
3. Step 3: Cross multiply
   238,308x = 349,442 × 349,442
4. Step 4: Simplify right side
   238,308x = 122,109,711,364
5. Step 5: Solve for x
   x = 122,109,711,364/238,308
6. Step 6: Final answer
   x = 512,402.90