Finding the Third Proportional to 297,100.41 and 641,561.77

Step by Step Solution

1. Step 1: Write the proportion equation
   297,100.41 : 641,561.77 = 641,561.77 : x
2. Step 2: Convert to fraction form
   297,100.41/641,561.77 = 641,561.77/x
3. Step 3: Cross multiply
   297,100.41x = 641,561.77 × 641,561.77
4. Step 4: Simplify right side
   297,100.41x = 411,601,499,111.87
5. Step 5: Solve for x
   x = 411,601,499,111.87/297,100.41
6. Step 6: Final answer
   x = 1,385,395.28