Finding the Third Proportional to 116,908 and 253,490

Step by Step Solution

1. Step 1: Write the proportion equation
   116,908 : 253,490 = 253,490 : x
2. Step 2: Convert to fraction form
   116,908/253,490 = 253,490/x
3. Step 3: Cross multiply
   116,908x = 253,490 × 253,490
4. Step 4: Simplify right side
   116,908x = 64,257,180,100
5. Step 5: Solve for x
   x = 64,257,180,100/116,908
6. Step 6: Final answer
   x = 549,638.86