Finding the Third Proportional to 681,604.50 and 1,069,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   681,604.50 : 1,069,312.50 = 1,069,312.50 : x
2. Step 2: Convert to fraction form
   681,604.50/1,069,312.50 = 1,069,312.50/x
3. Step 3: Cross multiply
   681,604.50x = 1,069,312.50 × 1,069,312.50
4. Step 4: Simplify right side
   681,604.50x = 1,143,429,222,656.25
5. Step 5: Solve for x
   x = 1,143,429,222,656.25/681,604.50
6. Step 6: Final answer
   x = 1,677,555.27