Finding the Third Proportional to 148,624 and 320,468

Step by Step Solution

1. Step 1: Write the proportion equation
   148,624 : 320,468 = 320,468 : x
2. Step 2: Convert to fraction form
   148,624/320,468 = 320,468/x
3. Step 3: Cross multiply
   148,624x = 320,468 × 320,468
4. Step 4: Simplify right side
   148,624x = 102,699,739,024
5. Step 5: Solve for x
   x = 102,699,739,024/148,624
6. Step 6: Final answer
   x = 691,003.73