Finding the Third Proportional to 265,107 and 401,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   265,107 : 401,521.50 = 401,521.50 : x
2. Step 2: Convert to fraction form
   265,107/401,521.50 = 401,521.50/x
3. Step 3: Cross multiply
   265,107x = 401,521.50 × 401,521.50
4. Step 4: Simplify right side
   265,107x = 161,219,514,962.25
5. Step 5: Solve for x
   x = 161,219,514,962.25/265,107
6. Step 6: Final answer
   x = 608,129.98