Finding the Third Proportional to 117,378 and 249,300

Step by Step Solution

1. Step 1: Write the proportion equation
   117,378 : 249,300 = 249,300 : x
2. Step 2: Convert to fraction form
   117,378/249,300 = 249,300/x
3. Step 3: Cross multiply
   117,378x = 249,300 × 249,300
4. Step 4: Simplify right side
   117,378x = 62,150,490,000
5. Step 5: Solve for x
   x = 62,150,490,000/117,378
6. Step 6: Final answer
   x = 529,490.11