Finding the Third Proportional to 299,610 and 455,548.50

Step by Step Solution

1. Step 1: Write the proportion equation
   299,610 : 455,548.50 = 455,548.50 : x
2. Step 2: Convert to fraction form
   299,610/455,548.50 = 455,548.50/x
3. Step 3: Cross multiply
   299,610x = 455,548.50 × 455,548.50
4. Step 4: Simplify right side
   299,610x = 207,524,435,852.25
5. Step 5: Solve for x
   x = 207,524,435,852.25/299,610
6. Step 6: Final answer
   x = 692,648.56