Finding the Third Proportional to 90,784,870 and 188,029,516

Step by Step Solution

1. Step 1: Write the proportion equation
   90,784,870 : 188,029,516 = 188,029,516 : x
2. Step 2: Convert to fraction form
   90,784,870/188,029,516 = 188,029,516/x
3. Step 3: Cross multiply
   90,784,870x = 188,029,516 × 188,029,516
4. Step 4: Simplify right side
   90,784,870x = 35,355,098,887,194,256
5. Step 5: Solve for x
   x = 35,355,098,887,194,256/90,784,870
6. Step 6: Final answer
   x = 389,438,227.84