Finding the Third Proportional to 921,700 and 1,916,972

Step by Step Solution

1. Step 1: Write the proportion equation
   921,700 : 1,916,972 = 1,916,972 : x
2. Step 2: Convert to fraction form
   921,700/1,916,972 = 1,916,972/x
3. Step 3: Cross multiply
   921,700x = 1,916,972 × 1,916,972
4. Step 4: Simplify right side
   921,700x = 3,674,781,648,784
5. Step 5: Solve for x
   x = 3,674,781,648,784/921,700
6. Step 6: Final answer
   x = 3,986,960.67