Finding the Third Proportional to 445,767.50 and 869,199

Step by Step Solution

1. Step 1: Write the proportion equation
   445,767.50 : 869,199 = 869,199 : x
2. Step 2: Convert to fraction form
   445,767.50/869,199 = 869,199/x
3. Step 3: Cross multiply
   445,767.50x = 869,199 × 869,199
4. Step 4: Simplify right side
   445,767.50x = 755,506,901,601
5. Step 5: Solve for x
   x = 755,506,901,601/445,767.50
6. Step 6: Final answer
   x = 1,694,845.19