Finding the Third Proportional to 201,321.50 and 438,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,321.50 : 438,068.50 = 438,068.50 : x
2. Step 2: Convert to fraction form
   201,321.50/438,068.50 = 438,068.50/x
3. Step 3: Cross multiply
   201,321.50x = 438,068.50 × 438,068.50
4. Step 4: Simplify right side
   201,321.50x = 191,904,010,692.25
5. Step 5: Solve for x
   x = 191,904,010,692.25/201,321.50
6. Step 6: Final answer
   x = 953,221.64