Finding the Third Proportional to 434,130 and 670,876.50

Step by Step Solution

1. Step 1: Write the proportion equation
   434,130 : 670,876.50 = 670,876.50 : x
2. Step 2: Convert to fraction form
   434,130/670,876.50 = 670,876.50/x
3. Step 3: Cross multiply
   434,130x = 670,876.50 × 670,876.50
4. Step 4: Simplify right side
   434,130x = 450,075,278,252.25
5. Step 5: Solve for x
   x = 450,075,278,252.25/434,130
6. Step 6: Final answer
   x = 1,036,729.27