Finding the Third Proportional to 691,510.50 and 1,509,111

Step by Step Solution

1. Step 1: Write the proportion equation
   691,510.50 : 1,509,111 = 1,509,111 : x
2. Step 2: Convert to fraction form
   691,510.50/1,509,111 = 1,509,111/x
3. Step 3: Cross multiply
   691,510.50x = 1,509,111 × 1,509,111
4. Step 4: Simplify right side
   691,510.50x = 2,277,416,010,321
5. Step 5: Solve for x
   x = 2,277,416,010,321/691,510.50
6. Step 6: Final answer
   x = 3,293,393.25