Finding the Third Proportional to 623,146.50 and 976,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   623,146.50 : 976,279.50 = 976,279.50 : x
2. Step 2: Convert to fraction form
   623,146.50/976,279.50 = 976,279.50/x
3. Step 3: Cross multiply
   623,146.50x = 976,279.50 × 976,279.50
4. Step 4: Simplify right side
   623,146.50x = 953,121,662,120.25
5. Step 5: Solve for x
   x = 953,121,662,120.25/623,146.50
6. Step 6: Final answer
   x = 1,529,530.64