Finding the Third Proportional to 349,418 and 748,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,418 : 748,666.50 = 748,666.50 : x
2. Step 2: Convert to fraction form
   349,418/748,666.50 = 748,666.50/x
3. Step 3: Cross multiply
   349,418x = 748,666.50 × 748,666.50
4. Step 4: Simplify right side
   349,418x = 560,501,528,222.25
5. Step 5: Solve for x
   x = 560,501,528,222.25/349,418
6. Step 6: Final answer
   x = 1,604,100.33