Finding the Third Proportional to 646,612.50 and 1,405,146

Step by Step Solution

1. Step 1: Write the proportion equation
   646,612.50 : 1,405,146 = 1,405,146 : x
2. Step 2: Convert to fraction form
   646,612.50/1,405,146 = 1,405,146/x
3. Step 3: Cross multiply
   646,612.50x = 1,405,146 × 1,405,146
4. Step 4: Simplify right side
   646,612.50x = 1,974,435,281,316
5. Step 5: Solve for x
   x = 1,974,435,281,316/646,612.50
6. Step 6: Final answer
   x = 3,053,506.21