Finding the Third Proportional to 265,560 and 406,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   265,560 : 406,081.50 = 406,081.50 : x
2. Step 2: Convert to fraction form
   265,560/406,081.50 = 406,081.50/x
3. Step 3: Cross multiply
   265,560x = 406,081.50 × 406,081.50
4. Step 4: Simplify right side
   265,560x = 164,902,184,642.25
5. Step 5: Solve for x
   x = 164,902,184,642.25/265,560
6. Step 6: Final answer
   x = 620,960.18