Finding the Third Proportional to 342,030 and 749,730

Step by Step Solution

1. Step 1: Write the proportion equation
   342,030 : 749,730 = 749,730 : x
2. Step 2: Convert to fraction form
   342,030/749,730 = 749,730/x
3. Step 3: Cross multiply
   342,030x = 749,730 × 749,730
4. Step 4: Simplify right side
   342,030x = 562,095,072,900
5. Step 5: Solve for x
   x = 562,095,072,900/342,030
6. Step 6: Final answer
   x = 1,643,408.69