Finding the Third Proportional to 694,153.50 and 1,072,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   694,153.50 : 1,072,690.50 = 1,072,690.50 : x
2. Step 2: Convert to fraction form
   694,153.50/1,072,690.50 = 1,072,690.50/x
3. Step 3: Cross multiply
   694,153.50x = 1,072,690.50 × 1,072,690.50
4. Step 4: Simplify right side
   694,153.50x = 1,150,664,908,790.25
5. Step 5: Solve for x
   x = 1,150,664,908,790.25/694,153.50
6. Step 6: Final answer
   x = 1,657,651.96