Finding the Third Proportional to 668,128.50 and 1,075,730.63

Step by Step Solution

1. Step 1: Write the proportion equation
   668,128.50 : 1,075,730.63 = 1,075,730.63 : x
2. Step 2: Convert to fraction form
   668,128.50/1,075,730.63 = 1,075,730.63/x
3. Step 3: Cross multiply
   668,128.50x = 1,075,730.63 × 1,075,730.63
4. Step 4: Simplify right side
   668,128.50x = 1,157,196,377,562.89
5. Step 5: Solve for x
   x = 1,157,196,377,562.89/668,128.50
6. Step 6: Final answer
   x = 1,731,996.73