Finding the Third Proportional to 616,323 and 865,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   616,323 : 865,372.50 = 865,372.50 : x
2. Step 2: Convert to fraction form
   616,323/865,372.50 = 865,372.50/x
3. Step 3: Cross multiply
   616,323x = 865,372.50 × 865,372.50
4. Step 4: Simplify right side
   616,323x = 748,869,563,756.25
5. Step 5: Solve for x
   x = 748,869,563,756.25/616,323
6. Step 6: Final answer
   x = 1,215,060.23