Finding the Third Proportional to 611,217 and 830,083.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,217 : 830,083.50 = 830,083.50 : x
2. Step 2: Convert to fraction form
   611,217/830,083.50 = 830,083.50/x
3. Step 3: Cross multiply
   611,217x = 830,083.50 × 830,083.50
4. Step 4: Simplify right side
   611,217x = 689,038,616,972.25
5. Step 5: Solve for x
   x = 689,038,616,972.25/611,217
6. Step 6: Final answer
   x = 1,127,322.40