Finding the Third Proportional to 1,390,981.50 and 2,931,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,981.50 : 2,931,406.50 = 2,931,406.50 : x
2. Step 2: Convert to fraction form
   1,390,981.50/2,931,406.50 = 2,931,406.50/x
3. Step 3: Cross multiply
   1,390,981.50x = 2,931,406.50 × 2,931,406.50
4. Step 4: Simplify right side
   1,390,981.50x = 8,593,144,068,242.25
5. Step 5: Solve for x
   x = 8,593,144,068,242.25/1,390,981.50
6. Step 6: Final answer
   x = 6,177,755.83