Finding the Third Proportional to 688,169,141 and 1,019,353,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   688,169,141 : 1,019,353,690.50 = 1,019,353,690.50 : x
2. Step 2: Convert to fraction form
   688,169,141/1,019,353,690.50 = 1,019,353,690.50/x
3. Step 3: Cross multiply
   688,169,141x = 1,019,353,690.50 × 1,019,353,690.50
4. Step 4: Simplify right side
   688,169,141x = 1,039,081,946,335,969,792
5. Step 5: Solve for x
   x = 1,039,081,946,335,969,792/688,169,141
6. Step 6: Final answer
   x = 1,509,922,320.59