Finding the Third Proportional to 1,036,688 and 2,156,138

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036,688 : 2,156,138 = 2,156,138 : x
2. Step 2: Convert to fraction form
   1,036,688/2,156,138 = 2,156,138/x
3. Step 3: Cross multiply
   1,036,688x = 2,156,138 × 2,156,138
4. Step 4: Simplify right side
   1,036,688x = 4,648,931,075,044
5. Step 5: Solve for x
   x = 4,648,931,075,044/1,036,688
6. Step 6: Final answer
   x = 4,484,407.15