Finding the Third Proportional to 136,440 and 293,400.56

Step by Step Solution

1. Step 1: Write the proportion equation
   136,440 : 293,400.56 = 293,400.56 : x
2. Step 2: Convert to fraction form
   136,440/293,400.56 = 293,400.56/x
3. Step 3: Cross multiply
   136,440x = 293,400.56 × 293,400.56
4. Step 4: Simplify right side
   136,440x = 86,083,890,075.32
5. Step 5: Solve for x
   x = 86,083,890,075.32/136,440
6. Step 6: Final answer
   x = 630,928.54