Finding the Third Proportional to 116,422.50 and 254,640

Step by Step Solution

1. Step 1: Write the proportion equation
   116,422.50 : 254,640 = 254,640 : x
2. Step 2: Convert to fraction form
   116,422.50/254,640 = 254,640/x
3. Step 3: Cross multiply
   116,422.50x = 254,640 × 254,640
4. Step 4: Simplify right side
   116,422.50x = 64,841,529,600
5. Step 5: Solve for x
   x = 64,841,529,600/116,422.50
6. Step 6: Final answer
   x = 556,950.16