Finding the Third Proportional to 1,200,087 and 1,688,073

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,087 : 1,688,073 = 1,688,073 : x
2. Step 2: Convert to fraction form
   1,200,087/1,688,073 = 1,688,073/x
3. Step 3: Cross multiply
   1,200,087x = 1,688,073 × 1,688,073
4. Step 4: Simplify right side
   1,200,087x = 2,849,590,453,329
5. Step 5: Solve for x
   x = 2,849,590,453,329/1,200,087
6. Step 6: Final answer
   x = 2,374,486.56