Finding the Third Proportional to 912,189,153 and 1,991,582,931

Step by Step Solution

1. Step 1: Write the proportion equation
   912,189,153 : 1,991,582,931 = 1,991,582,931 : x
2. Step 2: Convert to fraction form
   912,189,153/1,991,582,931 = 1,991,582,931/x
3. Step 3: Cross multiply
   912,189,153x = 1,991,582,931 × 1,991,582,931
4. Step 4: Simplify right side
   912,189,153x = 3,966,402,571,050,550,784
5. Step 5: Solve for x
   x = 3,966,402,571,050,550,784/912,189,153
6. Step 6: Final answer
   x = 4,348,223,784.51