Finding the Third Proportional to 345,262 and 753,290

Step by Step Solution

1. Step 1: Write the proportion equation
   345,262 : 753,290 = 753,290 : x
2. Step 2: Convert to fraction form
   345,262/753,290 = 753,290/x
3. Step 3: Cross multiply
   345,262x = 753,290 × 753,290
4. Step 4: Simplify right side
   345,262x = 567,445,824,100
5. Step 5: Solve for x
   x = 567,445,824,100/345,262
6. Step 6: Final answer
   x = 1,643,522.38