Finding the Third Proportional to 101,263.50 and 218,109

Step by Step Solution

1. Step 1: Write the proportion equation
   101,263.50 : 218,109 = 218,109 : x
2. Step 2: Convert to fraction form
   101,263.50/218,109 = 218,109/x
3. Step 3: Cross multiply
   101,263.50x = 218,109 × 218,109
4. Step 4: Simplify right side
   101,263.50x = 47,571,535,881
5. Step 5: Solve for x
   x = 47,571,535,881/101,263.50
6. Step 6: Final answer
   x = 469,779.69